diff --git a/.github/settings.yml b/.github/settings.yml
index 2452d7b2..83868e8f 100644
--- a/.github/settings.yml
+++ b/.github/settings.yml
@@ -14,16 +14,13 @@ branches:
         required_approving_review_count: 1
       required_status_checks:
         checks:
-          - context: "Code Coverage (8.0, locked)"
-          - context: "Coding Standards (8.0, locked)"
-          - context: "Dependency Analysis (8.0, locked)"
-          - context: "Mutation Tests (8.0, locked)"
-          - context: "Refactoring (8.0, locked)"
-          - context: "Security Analysis (8.0, locked)"
-          - context: "Static Code Analysis (8.0, locked)"
-          - context: "Tests (8.0, highest)"
-          - context: "Tests (8.0, locked)"
-          - context: "Tests (8.0, lowest)"
+          - context: "Code Coverage (8.1, locked)"
+          - context: "Coding Standards (8.1, locked)"
+          - context: "Dependency Analysis (8.1, locked)"
+          - context: "Mutation Tests (8.1, locked)"
+          - context: "Refactoring (8.1, locked)"
+          - context: "Security Analysis (8.1, locked)"
+          - context: "Static Code Analysis (8.1, locked)"
           - context: "Tests (8.1, highest)"
           - context: "Tests (8.1, locked)"
           - context: "Tests (8.1, lowest)"
diff --git a/.github/workflows/integrate.yaml b/.github/workflows/integrate.yaml
index 9d5bb6fb..65bf3355 100644
--- a/.github/workflows/integrate.yaml
+++ b/.github/workflows/integrate.yaml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
+          - "8.1"
 
         dependencies:
           - "locked"
@@ -73,7 +73,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
+          - "8.1"
 
         dependencies:
           - "locked"
@@ -143,7 +143,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
+          - "8.1"
 
         dependencies:
           - "locked"
@@ -194,7 +194,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
+          - "8.1"
 
         dependencies:
           - "locked"
@@ -241,7 +241,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
+          - "8.1"
 
         dependencies:
           - "locked"
@@ -298,7 +298,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
+          - "8.1"
 
         dependencies:
           - "locked"
@@ -331,7 +331,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
+          - "8.1"
 
         dependencies:
           - "locked"
@@ -379,7 +379,6 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
           - "8.1"
           - "8.2"
 
diff --git a/.github/workflows/renew.yaml b/.github/workflows/renew.yaml
index aa211ebe..84271082 100644
--- a/.github/workflows/renew.yaml
+++ b/.github/workflows/renew.yaml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.0"
+          - "8.1"
 
         dependencies:
           - "locked"
diff --git a/.phive/phars.xml b/.phive/phars.xml
index a30ffc0e..b195d717 100644
--- a/.phive/phars.xml
+++ b/.phive/phars.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-  <phar name="composer-require-checker" version="^4.4.0" installed="4.4.0" location="./.phive/composer-require-checker" copy="false"/>
+  <phar name="composer-require-checker" version="^4.6.0" installed="4.6.0" location="./.phive/composer-require-checker" copy="false"/>
 </phive>
diff --git a/.php-cs-fixer.php b/.php-cs-fixer.php
index 70737004..4da89857 100644
--- a/.php-cs-fixer.php
+++ b/.php-cs-fixer.php
@@ -26,7 +26,7 @@
 
 $license->save();
 
-$config = PhpCsFixer\Config\Factory::fromRuleSet(new PhpCsFixer\Config\RuleSet\Php80($license->header()));
+$config = PhpCsFixer\Config\Factory::fromRuleSet(new PhpCsFixer\Config\RuleSet\Php81($license->header()));
 
 $config->getFinder()
     ->exclude([
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fec9b724..71b05b88 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 For a full diff see [`2.1.0...main`][2.1.0...main].
 
+## Changed
+
+- Dropped support for PHP 8.0 ([#644]), by [@localheinz]
+
 ## [`2.1.0`][2.1.0]
 
 For a full diff see [`2.0.0...2.1.0`][2.0.0...2.1.0].
@@ -105,5 +109,6 @@ For a full diff see [`675601b...0.1.0`][675601b...0.1.0].
 [#533]: https://github.com/ergebnis/license/pull/533
 [#534]: https://github.com/ergebnis/license/pull/534
 [#550]: https://github.com/ergebnis/license/pull/550
+[#644]: https://github.com/ergebnis/license/pull/644
 
 [@localheinz]: https://github.com/localheinz
diff --git a/composer.json b/composer.json
index 6d7c83c7..5b0dd2f5 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     "source": "https://github.com/ergebnis/license"
   },
   "require": {
-    "php": "~8.0.0 || ~8.1.0 || ~8.2.0",
+    "php": "~8.1.0 || ~8.2.0",
     "ext-filter": "*"
   },
   "require-dev": {
@@ -50,7 +50,7 @@
       "infection/extension-installer": true
     },
     "platform": {
-      "php": "8.0.25"
+      "php": "8.1.20"
     },
     "preferred-install": "dist",
     "sort-packages": true
diff --git a/composer.lock b/composer.lock
index 193ae3d7..fedc7f47 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "f621d4ed661a27a9c96425ee8d3488b6",
+    "content-hash": "f78808748ef4fd77b4f96bba6bf61ed1",
     "packages": [],
     "packages-dev": [
         {
@@ -6320,12 +6320,12 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~8.0.0 || ~8.1.0 || ~8.2.0",
+        "php": "~8.1.0 || ~8.2.0",
         "ext-filter": "*"
     },
     "platform-dev": [],
     "platform-overrides": {
-        "php": "8.0.25"
+        "php": "8.1.20"
     },
     "plugin-api-version": "2.3.0"
 }
diff --git a/rector.php b/rector.php
index 5c358c85..52fccdcc 100644
--- a/rector.php
+++ b/rector.php
@@ -25,7 +25,7 @@
         __DIR__ . '/test/',
     ]);
 
-    $rectorConfig->phpVersion(Core\ValueObject\PhpVersion::PHP_80);
+    $rectorConfig->phpVersion(Core\ValueObject\PhpVersion::PHP_81);
 
     $rectorConfig->sets([
         PHPUnit\Set\PHPUnitSetList::PHPUNIT_90,